Debt Avalanche Calculator

The debt avalanche method directs all extra payments toward your highest-interest debt first, then rolls that payment to the next highest rate once each debt is cleared. This mathematically optimal strategy minimizes the total interest you pay, saving more money than any other payoff approach.

Enter Your Measurements

Total Debt Balance($)

Total Minimum Monthly Payment($)

Extra Monthly Payment($)

Average Interest Rate(%)

Results

Months to Debt Freedom

months

Total Interest Paid

11,074.41

Total Amount Paid

36,074.41

Formula

All extra payments go to highest-interest debt first Monthly Interest = Balance × (Annual Rate / 12); repeat until balance = $0

How to Use This Calculator

How to Use

1
Enter your total combined debt balance.
2
Enter the sum of all minimum monthly payments across your debts.
3
Enter any extra amount you can pay each month beyond minimums.
4
See your months to payoff and total interest cost using the avalanche strategy.

Frequently Asked Questions

How much does the avalanche method save versus the snowball?

It depends on the spread of interest rates and balances. The avalanche typically saves hundreds to thousands of dollars and several months of payments on a diverse debt portfolio.

Can I combine the avalanche and snowball methods?

Yes — some people use the snowball for one or two small debts to build momentum, then switch to avalanche. Any extra payment toward debt beats making only minimum payments.

In-Depth Guides

📖

Debt Payoff Strategies: Snowball vs Avalanche Method

Compare the debt avalanche and debt snowball methods, when to use each, and how to choose the best strategy to pay off your debt faster and save on interest.

📖

Personal Loans: When They Make Sense and What to Watch Out For

When to use a personal loan, how to get the best rates, and alternatives that might be smarter for your situation.

Related Calculators

Debt Snowball Calculator

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About This Calculator

This calculator uses the formula: All extra payments go to highest-interest debt first Monthly Interest = Balance × (Annual Rate / 12); repeat until balance = $0. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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